Hi All,

I noticed on my 302 while doing a cooling system leak repair that a decent amount of brown sludge like stuff formed on the Temp Sensor.

Then after that during a rad refill I found some sludge (minimal) there but what stood out were chunks of some material lodged into multiple fins.

I took pictures and will post.  I was able to use a magnet to pull some pieces out which clearly shows its metal/rust.....to which I don't understand where it would be coming from